Quota large then 4 TiB

If we set quota bigger then 4TiB, system print message "The specified quota exceeds the max. possible value of 4TiB."
How can we set 25TiB quota per group in OMV?
Maybe we need change kernel to 2.6.33? in Search service "setup-user-group-quotas-4tib-on-ubuntu"
Help us please!

After kernel upgrade to 3.2.0-0.bpo.4-amd64
adding modules quota_v1 and quota_v2 to /etc/modules
adding option jqfmt=vfsv1 to my NAS drive mount In /etc/fstab or change it from jqfmt=vfsv0
System can operate with quota bigger then 4TiB, but OMV still print message "The specified quota exceeds the max. possible value of 4TiB."
vi /var/www/openmediavault/js/omv/module/admin/FileSystemMgmt.js
and change line containing:
if (bhardlimit > 4 * Math.pow(2, 40)) {
OMV.MessageBox.failure(null, _("The specified quota exceeds the max. possible value of 4TiB."));
on
if (bhardlimit > 40 * Math.pow(2, 40)) {
OMV.MessageBox.failure(null, _("The specified quota exceeds the max. possible value of 40TiB."));

But!
1 - I can't test this limit at now. We need some time to upload data/
2 - Why repquota -a command don't show my users used quota? It is show only root user:
*** Report for user quotas on device /dev/sda3
Block grace time: 7days; Inode grace time: 7days
Block limits File limits
User used soft hard grace used soft hard grace
----------------------------------------------------------------------
root -- 24 0 0 3 0 0